Turbine.



TURBINE.

APPLIOATION FILED FEB.2,1905.

Tg5 'l 2 SHEETS-SHEET 2.

WITNESSES: 1 l N VEN T? UNITED STATES PATENT FFTCE.

TURBINE.

Specification of Letters Patent.

Patented Sept. 26, 1905.

Application led February 2, 1905. Serial No. 243,817.

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Be it known that l, CHARLES RHoADus, a subject of the King of Great Britain, and a resident of Tilbury, in the Province of Ontario and Dominion of Canada, have invented a new and Improved Turbine, of which the following is a full, clear, and exact description.

The invention relates to a turbine in which the rotor is provided with peripheral buckets and the motive fluid directed tangentially of the wheel against the buckets.

The invention resides in certain novel features of construction and relative arrangement of parts, which will be fully set forth hereinafter and pointed out in the claims.

Reference is to be had to the accompanying drawings, which represent the preferred embodiment of my invention, in which drawings like characters of reference indicate like parts in the several views, and in which4 Figure 1 is a vertical section of the invention essentially on the line 1 1 of Fig. 2. Fig. 2 is a vertical cross-section on the line 2 2 of 1, and Fig. 3 is a detail section showing one of the valves for controlling the fluid movement.

As here shown, the turbine comprises a base 10, on which the pedestals 11 are erected. These pedestals revolubly carry the turbineshaft 12, from which the power of the turbine is taken by any desired device. (Not shown.) Attached to and rotating with the shaft 12 is the turbine-wheel, which comprises a hub 14 formed in two sections and having a web 15 clamped between them. This web is in the form of a disk or circular plate and carries at its periphery the turbine-buckets, which comprise, essentially, conical bodies 16, having flanges 17 riveted or otherwise fastened to the wheel or disk 15. The bodies 16 and flanges 17 of the buckets are formed integral, preferably of a metallic plate bent into proper form, and the buckets are arranged with the smallerI end of one bucket entered into the larger end of the adjacent bucket, said buckets lying in this arrangement continuously around the periphery of the turbine.

Fastened to the base 10 are two cheekplates 18, forming the sides of the turbine shell or casing. Between these plates is arranged a steam-distributing ring 19, this ring being fastened to the peripheral portions of the plates and forming therewith and with the base 10 a complete closure for the turbine-wheel. The said steam-distributing ring 19 has a steam-supply pipe 20', leading into a steam-chamber `21. which is formed in the rim and extends around the same from one side of the base to the other, as shown best in Fig. 1. Passing from this steam-chamber 21 are a number, preferably four, of steamnozzles 22, which distribute tangentially of the turbine-wheel from the inner periphery of the rim, so that the steam passing from said nozzles acts by impact on said buckets and imparts a rotary movement to the wheel. Said nozzles 22 may, if desired, be formed flaring, so that the velocity of the steam passing from the nozzles may be increased by expansion, as will be understood. The nozzles 22 are connected to the steam-chamber 21 by means of valve-seats 23, and these seats coact with valves 24C, which are carried on-stems 25, operating in plugs 26, screwed or otherwise secured in the outer walls of the rim 19.

By this means any one of the nozzles 22 may be cut out of action, if desired. The inner surface of the rim 19 is formed adjacent to each nozzle with an enlargement 27, which extends inward into close proximity with the outer parts of the buckets 16, these various enlargements 27 being separated from each other by indented portions 28. Passing from the indented portion 28 at the bottom of the turbine is an exhaust-passage 29.

The operation of the invention will, it is thought, be fully understood from the prior art. The steam or other motive fluid under pressure being suppliedv to the chamber 21 will pervade the same, and the valves 24 being open it will pass through the nozzles 22, acting on the buckets at the periphery of the turbine-wheel to impart a continuous rotary movement to said wheel, the speed of which movement will be proportionate to the pressure of the motive fluid. Any one or all of the nozzles may be cut out of action by operating the valves 211, and these valves provide means for effectually controlling the speed of rotation of the turbine-wheel. The small ends of the buckets are open and discharge into the large ends of the buckets next adjacent, so that during heavy loads the steamjets will be forced through one or more buckets, exerting a part of the power on each succeeding bucket and avoiding choking the jets by the steam rebounding during slow speeds.

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Having thus described the preferred form of my invention, what I claim as new7 and desire to secure by Letters Patent, is-Yf 1. A turbine having' a shell or casing with a motive-tl uid chamber in its periphery, nozzlepassages leading from said chamber tangentially into the inner part of the said shell or casing, means for independently controlling the tluid movement through said passages, a turbine-wheel mounted on the shell or easing and comprising a hub and web, and conical buckets secured to the rim of the web, said buckets having' their smaller ends projecting' into the larger ends ofthe contiguous buckets.

2. A turbine-Wheel provided with conical buckets secured to the periphery of the wheel directly contiguous to each other, the smaller end of one bucket being entered into the larger' end of the adjacent bucket.

3, A turbine-wheel having peripheral buckets, cach 'formed of an integral plate or sheet of metal, said plate or sheet being bent to form conical bucket-bodies and attaching- H'anges projecting' therefrom.

et. A turbine-wheel comprising a web or disk and buckets, each formed of a plate or sheet of metal bent to form a conical or tapering body and side anges projecting therefrom, the said lianges being fastened respectively to the sides of the web of the wheel.

5. A turbine comprising' a web or disk and buckets, each formed of a plate or sheet of metal bent to form a conical or tapering' body and side flanges projecting' therefrom, the said anges being fastened respectively to the sides of the web of the wheel, and the smaller end of one bucket being projected into the larger end of the contiguous bucket.

6. A turbine-wheel havingperipheral buckets, conical or tapering in form and open at each end, the small end of one bucket discharging' into the large end of the adjacent bucket.

ln testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CHARLES RHOADES.

Titnessesz JOHN F. MoPHERsoN, C. VYLIE. 

